Volume 42 Issue 4
Apr.  2016
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LIANG Yajun, XIAO Mingqing, SONG Haifang, et al. Diagnostic strategy building method based on MDP[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 844-850. doi: 10.13700/j.bh.1001-5965.2015.0277(in Chinese)
Citation: LIANG Yajun, XIAO Mingqing, SONG Haifang, et al. Diagnostic strategy building method based on MDP[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 844-850. doi: 10.13700/j.bh.1001-5965.2015.0277(in Chinese)

Diagnostic strategy building method based on MDP

doi: 10.13700/j.bh.1001-5965.2015.0277
  • Received Date: 05 May 2015
  • Rev Recd Date: 02 Sep 2015
  • Publish Date: 20 Apr 2016
  • Aiming at the problem that by the traditional method, it is difficult to get the global optimal diagnostic strategy of the complicated test system in fault detection for ignoring the uncertainty factors in the test execution and lacking of the long cycle optimization mechanism, a new diagnostic strategy building method based on Markov decision processes (MDP) is proposed. The process of fault detection and isolation is expressed as a Markov process; the unlimited discount model of the utility integrated criterion function is structured through the discount factor and objective weights; the global optimal diagnostic strategy is obtained with the policy iteration algorithm. The example shows that the test uncertainty factors are well considered, stable optimal strategy of overall situation can be achieved by this method, and the fast fault detection and isolation in the engineering practice can be guided effectively as well.

     

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